New water quality index by reflection absorbance method

Generally, water indices for rivers and lakes include chemical indices and biological indices. Special knowledge and techniques are needed for these indices. Therefore, a water color is studied as a simple and comprehensive index. The reflection absorbance is a technique to measure the scattered light spectrum on filter paper with a spectrophotometer after sample water is filtered. The reflection absorbance showed the pollution situation of water and included various informations on water quality. Moreover, it is known that there is a correlation between a specific concentration of the material included in the river water and the absorbance.